// license:BSD-3-Clause // copyright-holders:Olivier Galibert /********************************************************************* formats/wd177x_sk.h helper for simple wd177x-formatted disk images *********************************************************************/ #ifndef MAME_FORMATS_WD177X_DSK_H #define MAME_FORMATS_WD177X_DSK_H #pragma once #include "flopimg.h" class wd177x_format : public floppy_image_format_t { public: struct format { uint32_t form_factor; // See floppy_image for possible values uint32_t variant; // See floppy_image for possible values uint32_t encoding; // See floppy_image for possible values int cell_size; // See floppy_image_format_t for details int sector_count; int track_count; int head_count; int sector_base_size; int per_sector_size[40]; // if sector_base_size is 0 int sector_base_id; // 0 or 1 usually, -1 if there's interleave int per_sector_id[40]; // if sector_base_id is -1. If both per are used, then sector per_sector_id[i] has size per_sector_size[i] int gap_1; // Usually around 80 - number of 4e between index and first IDAM sync int gap_2; // 22 for <=1.44Mb, 41 for 2.88Mb - number of 4e between sector header and data sync int gap_3; // Usually 24 - number of 4e between sector crc and next IDAM }; // End the array with {} wd177x_format(const format *formats); virtual int identify(io_generic *io, uint32_t form_factor) override; virtual bool load(io_generic *io, uint32_t form_factor, floppy_image *image) override; virtual bool save(io_generic *io, floppy_image *image) override; virtual bool supports_save() const override; protected: enum { FM_DAM = 0xf56f, FM_DDAM = 0xf56a, MFM_DAM = 0xfb, MFM_DDAM = 0xf8 }; const format *formats; virtual floppy_image_format_t::desc_e* get_desc_fm(const format &f, int ¤t_size, int &end_gap_index); virtual floppy_image_format_t::desc_e* get_desc_mfm(const format &f, int ¤t_size, int &end_gap_index); virtual int find_size(io_generic *io, uint32_t form_factor); virtual int get_image_offset(const format &f, int head, int track); virtual int get_track_dam_fm(const format &f, int head, int track); virtual int get_track_dam_mfm(const format &f, int head, int track); int compute_track_size(const format &f) const; virtual void build_sector_description(const format &d, uint8_t *sectdata, desc_s *sectors, int track, int head) const; virtual void check_compatibility(floppy_image *image, std::vector &candidates); void extract_sectors(floppy_image *image, const format &f, desc_s *sdesc, int track, int head); }; #endif // MAME_FORMATS_WD177X_DSK_H